Wow this game is getting slaughtered by reviewers !!
Well i bought it ( i bet that i own more move-specific games that most sony fans in this forum or elsewhere , judging by the software sales) and it's a very good game , if you let yourself have fun with what the game is supposed to be. Great graphics , nice workout system and the game actually encourages you to work out so that you can gain skill points and make your fighter better and incredibly intense fights. If you hate getting tired by playing videogames avoid this like the plague . My arms hurt like crazy after playing this for 90 minutes but i don't mind at all.
The motion based precision of your moves is not the best but this doesn't really bother me when playing the game. The production values are the best for a move-specific game thus far. The game is serious , maybe more so than needed (although Dany Tredjo is hilarious) and has a dark tone somewhat similar to fight club. The menus and options that the game provides are a nice change from the bare bones presentation of games like sports champions.
I give the fight an 8 and i recommend it to anyone that likes motion-based games and isn't afraid of a bit exercise (oh the game counts the calories you burn , another plus , IMO)
I generally don't get the reviews of most motion-based games.